Apparatus for making black plates or sheets.



No. 70,069 Patented Dec. 30, I902. C. W. BRAY.

APPARATUS FOR MAKING BLACK PLATES 0R SHEETS.

(Applicntiun filed Mar, 15. 1902.]

I (No Model.)

WITNESSES UNTTnD STATES PATENT OFFICE.

CHARLES WV. BRAY, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO THE AMERICAN TIN PLATE COMPANY, OF'ORANGE, NEV JERSEY, A COR- PORATION OF NEW JERSEY.

APPARATUS FOR MAKING BLACK PLATES OR SHEETS.

SPECIFICATION formingpart of Letters Patent No. 717,069, dated December 1902- Application filed March 15, 1902. Serial No. 98,861. (No model.)

To (0 whom, it may concern.

Be it known that 1, CHARLES W. BRAY, of Pittsburg, Allegheny county, Pennsylvania, have invented anew and useful Apparatus for Making Black Plates or Sheets, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which Figure 1 is a diagrammatic plan view of my improved apparatus; and Fig. 2 is a similar view, on an enlarged scale, on the line II II of Fig. 1.

My invention relates to the production of black plates or sheets; and it is designed to cheapen the cost of such operations, to reduce the number of heatings, and also the number of separate rolling operations.

In the drawings, 2 represents a continuousheating furnace for plates or bars, having a feeding device 3 at its entering or rear end. A positively-driven feed-table 4 extends from the other end of this furnace to a continuousroughing mill. I have shown this mill as containing eight stands of plain-faced twohigh rolls 5, with feed-tables 6 between some of the sets. The number of stands may be changed and the feed-tables may or may not be used, as desired. The rolls my be driven in any suitable manner, and I have shown them as having gear connections with engines 6 6.

The sheet-bar issuing from the last set of rolls of this mill is fed forwardly upon a rollertable or other support 7, on which it may be fed sidewise by a hydraulic pusher 8 or other suitable mechanism. Along one side of the feed-table extends a rotary shear 9, having three sets of cutting-disks 10, the middle pair of which divides the sheet-bar centrally and transversely, while the other pairs trim its ends. The two halves of the severed sheetbar drop upon an inclined chute 11, leading to a slotted support 12, having stops 13. The two halves are matched above each other upon this support and are then doubled by means of the doubling-blade 14, which forces them upwardly between the grooved rollers 15 and thence through the plain-faced rollers 16. This doubler is preferably constructed in accordance with my United States Patent No. 698,438, dated April 29, 1902. The doubled pack of fours thus formedstrikes a deflector 17 and drops upon an inclined guide 18, which directs the pack upon a roller-table 19, which leads to chain conveyers 20. The conveyor-table is providedwith switch devices 21, by which the pack may be switched off at any one of a number of furnaces 22. Adjacent to each of these furnaces is a finishing-mill having two-high reversing-rolls 23, with feed tables 24 on each side thereof. From these iinishingmills the packs may be taken to sq uaring-shears, (shown at 25.)

In making black plates or sheets with my improved apparatus I may use the ordinary sheet-bars, which are preferably sheared of a slightly-greater width than that of the sheets to be made. These bars are charged into the rear eudof the continuous-heating furnace and thence pass through the continuousroughing mill.

The number of passes in this mill may be varied; but in starting with a sheet-bar-' which is, for example, twenty and one-half inches long, by eight inches wide, by threeeighths of an inch thick-l preferably reduce the same in the roughing-mill to about sixty inches long and about nineteen gage, the width not having been materially changed. The long bar thus formed is then pushed sidewise to the slitting-shears, and thus cut into two pieces and the ends trimmed at the same time. The number of shears may of course be varied, as desired, according to the length of the bar. The severed sections drop from the shear onto the doubler-support and are matched. 'lhe matched pack is then doubled and delivered to the conveyer, whence it passes to any one of the reheating-furnaces. The doubled packs are then reheated and rolled in the finishing-mills to the proper length to give the desired gage, and the packs of the severed sections gives a pack which plates from the roughing-mill to the shear mechanism, and from the shear mechanism to the matching and doubling apparatus, substantially as described.

2. In apparatus for manufacturing black plates or sheets, a continuous mill comprising a series of sets of roughing-rolls arranged in tandem, shear mechanism at the end of the series arranged to sever the bar transversely, a doubling apparatus, and mechanismfor transferring the metal from the continuous mill to the shear mechanism, and from the shear mechanism to the doubling apparatus; substantially as described.

3. In apparatus for manufacturing black plates or sheets, a continuous mill comprising a series of sets of roughing-rolls arranged in tandem, mechanism at the end of the roughing-rolls arranged to move the bar at an angle to its path through the mill, shear mechanism arranged to sever the bar transversely during its movement, matching and doubling apparatus, and mechanism for transferrin g the severed sections thereto; substantially as described.

4. In apparatus for manufacturing black plates or sheets, a continuous mill comprising a series of sets of roughing-rolls arranged in tandem, shear mechanism at the ends, of the roughing rolls arranged to simultaneously sever the bar transversely and trim its ends, a matching and doubling apparatus, mechanism for transferring the metal from the continuous mill to the shear mechanism and from the shear mechanism to the matching and doubling apparatus, and mechanism for transferring the doubled packs to a finishing-mill; substantially as described.

In testimony whereof I have hereunto set my hand.

G. W. BRAY.

Witnesses:

H. M. OORWIN, L. M. REDMAN. 

